musl: Define SOCK_NONBLOCK with O_NONBLOCK

Much like glibc, these defines are same on musl [1] [2]
therefore consolidate the definition in one place
for SOCK_NONBLOCK

[1] https://github.com/search?q=repo%3Abminor%2Fmusl++%22%23define+SOCK_NONBLOCK%22&type=code
[2] https://github.com/search?q=repo%3Abminor%2Fmusl++%22%23define+O_NONBLOCK%22&type=code

Author: kraj

src/unix/linux_like/linux/musl/b32/arm/mod.rs

@@ -312,8 +312,6 @@ pub const O_SYNC: ::c_int = 1052672;
 pub const O_RSYNC: ::c_int = 1052672;
 pub const O_DSYNC: ::c_int = 4096;
 
-pub const SOCK_NONBLOCK: ::c_int = 2048;
-
 pub const MAP_ANON: ::c_int = 0x0020;
 pub const MAP_GROWSDOWN: ::c_int = 0x0100;
 pub const MAP_DENYWRITE: ::c_int = 0x0800;

src/unix/linux_like/linux/musl/b32/hexagon.rs

@@ -294,7 +294,6 @@ pub const SIG_SETMASK: ::c_int = 2; // FIXME check these
 pub const SIG_BLOCK: ::c_int = 0x000000;
 pub const SIG_UNBLOCK: ::c_int = 0x01;
 pub const SOCK_DGRAM: ::c_int = 2;
-pub const SOCK_NONBLOCK: ::c_int = 2048;
 pub const SOCK_SEQPACKET: ::c_int = 5;
 pub const SOCK_STREAM: ::c_int = 1;
 pub const SOL_CAIF: ::c_int = 278;

src/unix/linux_like/linux/musl/b32/mips/mod.rs

@@ -251,8 +251,6 @@ pub const O_SYNC: ::c_int = 0o40020;
 pub const O_RSYNC: ::c_int = 0o40020;
 pub const O_DSYNC: ::c_int = 0o020;
 
-pub const SOCK_NONBLOCK: ::c_int = 0o200;
-
 pub const MAP_ANON: ::c_int = 0x800;
 pub const MAP_GROWSDOWN: ::c_int = 0x1000;
 pub const MAP_DENYWRITE: ::c_int = 0x2000;

src/unix/linux_like/linux/musl/b32/powerpc.rs

@@ -244,8 +244,6 @@ pub const O_SYNC: ::c_int = 1052672;
 pub const O_RSYNC: ::c_int = 1052672;
 pub const O_DSYNC: ::c_int = 4096;
 
-pub const SOCK_NONBLOCK: ::c_int = 2048;
-
 pub const MAP_ANON: ::c_int = 0x0020;
 pub const MAP_GROWSDOWN: ::c_int = 0x0100;
 pub const MAP_DENYWRITE: ::c_int = 0x0800;

src/unix/linux_like/linux/musl/b32/x86/mod.rs

@@ -301,8 +301,6 @@ pub const O_SYNC: ::c_int = 1052672;
 pub const O_RSYNC: ::c_int = 1052672;
 pub const O_DSYNC: ::c_int = 4096;
 
-pub const SOCK_NONBLOCK: ::c_int = 2048;
-
 pub const MAP_ANON: ::c_int = 0x0020;
 pub const MAP_GROWSDOWN: ::c_int = 0x0100;
 pub const MAP_DENYWRITE: ::c_int = 0x0800;

src/unix/linux_like/linux/musl/b64/mod.rs

@@ -134,8 +134,6 @@ pub const __SIZEOF_PTHREAD_RWLOCK_T: usize = 56;
 pub const __SIZEOF_PTHREAD_MUTEX_T: usize = 40;
 pub const __SIZEOF_PTHREAD_BARRIER_T: usize = 32;
 
-pub const SOCK_NONBLOCK: ::c_int = 2048;
-
 pub const SOCK_SEQPACKET: ::c_int = 5;
 
 extern "C" {

src/unix/linux_like/linux/musl/mod.rs

@@ -542,6 +542,7 @@ pub const POSIX_MADV_DONTNEED: ::c_int = 4;
 pub const MAP_ANONYMOUS: ::c_int = MAP_ANON;
 
 pub const SOCK_DCCP: ::c_int = 6;
+pub const SOCK_NONBLOCK: ::c_int = O_NONBLOCK;
 pub const SOCK_PACKET: ::c_int = 10;
 
 pub const SOMAXCONN: ::c_int = 128;